<template>
    <div class="app-container">
      <el-form
        :model="queryParams"
        ref="queryForm"
        size="small"
        :inline="true"
        v-show="showSearch"
        label-width="68px"
      >
        <el-form-item label="消息标题" prop="title">
          <el-input
            v-model="queryParams.title"
            placeholder="请输入标题"
            clearable
            @keyup.enter.native="handleQuery"
          />
        </el-form-item>
        <el-form-item label="消息内容" prop="content">
          <el-input
            v-model="queryParams.content"
            placeholder="请输入内容"
            clearable
            @keyup.enter.native="handleQuery"
          />
        </el-form-item>
        <el-form-item>
          <el-button
            type="primary"
            icon="el-icon-search"
            size="mini"
            @click="handleQuery"
            >搜索</el-button
          >
          <el-button icon="el-icon-refresh" size="mini" @click="resetQuery"
            >重置</el-button
          >
        </el-form-item>
      </el-form>
  
      <el-row :gutter="10" class="mb8">
        <el-col :span="1.5">
          <el-button
            type="primary"
            plain
            icon="el-icon-plus"
            size="mini"
            @click="handleAdd"
            >新增
          </el-button>
        </el-col>
        <right-toolbar
          :showSearch.sync="showSearch"
          @queryTable="getList"
        ></right-toolbar>
      </el-row>
  
      <el-table
        v-loading="loading"
        :data="messageList"
        @selection-change="handleSelectionChange"
      >
        <el-table-column label="ID" align="center" prop="id" />
        <el-table-column label="标题" align="center"  width="300" prop="title" />
        <el-table-column label="内容" width="300" align="center" prop="content">
          <template slot-scope="scope">
            <el-tooltip placement="top">
              <div slot="content" class="content">{{ scope.row.content }}</div>
              <div
                style="
                  width: 100%;
                  white-space: nowrap;
                  text-overflow: ellipsis;
                  overflow: hidden;
                "
              >
                {{ scope.row.content }}
              </div>
            </el-tooltip>
          </template>
        </el-table-column>
        <el-table-column label="创建时间" align="center" prop="createTime" width="100" />
        <el-table-column
          label="操作"
          align="center"
          class-name="small-padding fixed-width"
        >
          <template slot-scope="scope">
            <el-button
              size="mini"
              type="text"
              icon="el-icon-edit"
              @click="handleUpdate(scope.row)"
              >修改
            </el-button>
            <el-button
              size="mini"
              type="text"
              icon="el-icon-delete"
              @click="handleDelete(scope.row)"
              >删除
            </el-button>
          </template>
        </el-table-column>
      </el-table>
  
      <pagination
        v-show="total > 0"
        :total="total"
        :page.sync="queryParams.pageNo"
        :limit.sync="queryParams.pageSize"
        @pagination="getList"
      />
  
      <!-- 添加或修改通知公告对话框 -->
      <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
        <el-form ref="form" :model="form" :rules="rules" label-width="80px">
          <el-form-item label="标题" prop="title">
            <el-input v-model="form.title" maxlength="20"  show-word-limit placeholder="请输入标题" />
          </el-form-item>
          <el-form-item label="内容" prop="content">
              <el-input
              type="textarea"
              v-model="form.content"
              show-word-limit
              maxlength="200"
              :autosize="{ minRows: 4, maxRows: 4 }"
              placeholder="请输入消息内容"
            />
          </el-form-item>
        </el-form>
        <div slot="footer" class="dialog-footer">
          <el-button type="primary" @click="submitForm">确 定</el-button>
          <el-button @click="cancel">取 消</el-button>
        </div>
      </el-dialog>
    </div>
  </template>
  
  <script>
  import {
    getMessage,
    listMessage,
    addMessage,
    updateMessage,
    delMessage,
  } from "@/api/message/message";
  
  export default {
    name: "Message",
    data() {
      return {
        // 遮罩层
        loading: true,
        // 选中数组
        ids: [],
        // 非单个禁用
        single: true,
        // 非多个禁用
        multiple: true,
        // 显示搜索条件
        showSearch: true,
        // 总条数
        total: 0,
        // 通知公告表格数据
        messageList: [],
        // 弹出层标题
        title: "",
        // 是否显示弹出层
        open: false,
        // 查询参数
        queryParams: {
          pageNo: 1,
          pageSize: 10,
          content: "",
          title: "",
          roleType: 1, //1系统 2 店铺 3 用户
        },
        // 表单参数
        form: {
          title:'',
          content:''
        },
        // 表单校验
        rules: {
          title: [
            { required: true, message: "请输入系统消息标题", trigger: "blur" },
          ],
          content: [
            { required: true, message: "请输入系统消息内容", trigger: "blur" },
          ],
        },
      };
    },
    created() {
      this.getList();
    },
    methods: {
      /** 查询通知公告列表 */
      getList() {
        this.loading = true;
        listMessage(this.queryParams).then((response) => {
          this.messageList = response.data.records;
          this.total = response.data.total;
          this.loading = false;
        });
      },
      // 取消按钮
      cancel() {
        this.open = false;
        this.reset();
      },
      // 表单重置
      reset() {
        this.form = {
          title:'',
          content:''
        };
        this.resetForm("form");
      },
      /** 搜索按钮操作 */
      handleQuery() {
        this.queryParams.pageNo = 1;
        this.getList();
      },
      /** 重置按钮操作 */
      resetQuery() {
        this.resetForm("queryForm");
        this.handleQuery();
      },
      // 多选框选中数据
      handleSelectionChange(selection) {
        this.ids = selection.map((item) => item.id);
        this.single = selection.length !== 1;
        this.multiple = !selection.length;
      },
      /** 新增按钮操作 */
      handleAdd() {
        this.reset();
        this.open = true;
        this.title = "添加系统消息";
      },
      /** 修改按钮操作 */
      handleUpdate(row) {
        this.reset();
        const id = row.id;
        getMessage(id).then((response) => {
          this.form = response.data;
          this.open = true;
          this.title = "修改系统消息";
        });
      },
      /** 提交按钮 */
      submitForm() {
        this.$refs["form"].validate((valid) => {
          if (valid) {
            if (this.form.id != null) {
              updateMessage(this.form).then((response) => {
                this.$modal.msgSuccess("修改成功");
                this.open = false;
                this.getList();
              });
            } else {
              addMessage(this.form).then((response) => {
                this.$modal.msgSuccess("新增成功");
                this.open = false;
                this.getList();
              });
            }
          }
        });
      },
      /** 删除按钮操作 */
      handleDelete(row) {
        this.$modal
          .confirm('是否确认删除【'+row.title+'】系统消息')
          .then(function () {
            return delMessage(row.id);
          })
          .then(() => {
            this.getList();
            this.$modal.msgSuccess("删除成功");
          })
          .catch(() => {});
      },
    },
  };
  </script>
  <style lang="scss" scoped>
    .content {
        white-space: pre-wrap;
        max-width: 300px;
        line-height: 20px;
    }
 </style>
  